Car-brake



(No Model.)

J. 0. PATTERSON.

V GAR BRAKE. No. 271,111. Patented Jan.28, 1883.

WITNESSES: INVENTOR UNITE STATES- PATENT OFFICE.

J. CURTIS PATTERSON, OF PHILADELPHIA, PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 271,111, dated January 23, 1853.

Application tiled December 11,1882. (No model.)

To all whom it may concern Be it known that I, J. OUaTIs' PATTERSON, a citizen of the United States and a resident of the city and county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Brakes, of which the following is a specification.

The object of my invention is to overcome the flattening of the car-wheels due to the use of the ordinary brakes, and to provide a brake the action of which will be more effectual, economical, and rapid than that of the ordinary kind.

1n the accompanying drawings, forming part of this specification, and in which similar letters of reference indicate like parts throughout the several views, Figure 1 is a side view of a passenger-car truck with my invention attached Fig. 2, an enlarged side view of my brake-shoe; Fig. 3, a top view of the same; Fig. 4, an end view of the same; Fig. 5, a top view of the rocker-arm and airbrake cylinder; Fig. 6, a front view of the rocker-arm and shaft; Fig. 7, a side view of my invention, and Fig. 8 an end view of my levers for operating the shoes.

My brake-shoe A consists of a heavy piece of metal secured at one end to a bracket or pedestal, B, and at the other to the lower arm, a, of a toggle-jointlever. rectly upon the rail instead of upon the head of the wheel, as is usual, and the wear, instead of coming upon the wheels, comes upon the brake-shoes and rails.

The arrangement and operation of my invention are as follows: A shaft, D, is secured in some suitable manner to the car-trucks, (in the present case bybrackets O, bolted to each side of the framing,) and extends to or over both rails. At some convenient place on this shaft (preferably the center) is secured a rocker or arm, E, to which is fastened one end of a connecting. rod or chain, F, which connects with the piston-rod of the air or vacuum brakes or with the ordinary hand-brake shaft or side lever in the usual well-known manner. Each end of the shaft D is also provided with rockers G, having two arms, d c, to the ends of which are secured the end of the middle arm,

b, of the toggle-joint. The upper end of the toggle is secured to some convenient place on the car-truck. When the brakes are applied the connecting rod or chain is moved in the This shoe bears didirection of the arrow and moves over the rocker E, revolving the shaft D, and moving over the rockers G, which carry the ends of the middle toggle-joint, b. This throws down the shoes A,and the amount of pressure which they exert upon the rail depends upon the force which is applied to the shaft D through the medium of the steam, air, vacuum,or handlever apparatus attached thereto.

In order to raise the brake-shoes from the track, I have either a counter-weight, W, on the shaft D or a spring, S, secured to the lever d, the operation of these devices being obvious. In Fig. 7 the dotted lines show the shoes and levers when the brakes are not applied, the full lines representing their position when the brake is in action.

Having thus described myinvention,l claim and desire to secure by-Letters Patent- 1. The herein-described car-brake, consisting of the shoes A, situated between the wheels and bearing directly upon the rails, and being supported at one end by a bracket or pedestal, B, said bracket being bolted or otherwise suitably secured to the frame of the truck, and said shoes being operated by a toggle-lever, the lower arm of which is secured to the shoe,

the upper arm to some place on the truckfrarne,-and the middle arms to the ends of a rocker; G, situated on a horizontal shaft, D, all arranged and operating substantiallyps shownand described.

2. In a car-brake, and in combination with the brake-shoe A, bearing directly upon the rails, a lever formed of the arms a, I), and c, operated substantially as shown and described.

3. The combination, in a car-brake, of the shoe A, bracket B, toggle-joint lever on b c, rocker G, shaft D, rocker E, and connectingrod F or its equivalent, all operating substantially as shown and described.

4. The combination, in a car-brake, of the shoe A, bracket B, toggle-joint lever a b c, rocker G, shaft D, rocker E, and connectingrod F or its equivalent, and counter-weight W or spring S, all operating substantially as shown and described.

J. CURTIS PATTERSON.

Witnesses: I

GHAs. A. BUTTER, LOUIS H. KUEBLER.

IOO 

